NJW1132A
- 1 -
AUDIO PROCESSOR with SOUND ENHANCEMENT
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GENERAL DESCRIPTION
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PACKAGE OUTLINE
The NJW1132A is a sound processor with sound
enhancement (BBE). It includes all of functions processing
audio signal for TV, such as tone control, balance, volume,
mute, and AGC functions.
Also the NJW1132A performs surround and sound
enhancement. The sound enhancement regenerates high
definitive and nearly real sound.
All of internal status and variables are controlled by I
2
C
BUS interface.
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FEATURES
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Operating Voltage 8 to 13V
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I
2
C BUS Interface
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BBE Sound Enhancement (Low Boost and High Boost: 15dB max.)
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AGC Circuit (It reduces volume difference among input sources.)
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Matrix Surround
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Bi-CMOS Technology
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Package Outline SDIP30, SDMP30
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BLOCK DIAGRAM
NJW1132AM
VCC
SCL
SDA
AUX0
AUX1
GND
AGC
Control
Logic
Bias
IN a
OUTb
OUTa
Tone
Tone
Surround
IN b
BBE
BBE
Vref
Volume
1
Volume
1
Volume
2
Volume
2
TONE
INb
BBE
OUTb
BBE
OUTa
TONE
INa
BBE
1b
BBE
1a
BBE
2b
BBE
2a
TONE
Ha
TONE
La
TONE
Hb
TONE
Lb
AGC1
AGC2
PS
CTH
CTL
CVA
CVB
NJW1132AL
PRELIMINARY
NJW1132A
- 2 -
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PIN FUNCTION
No.
Symbol
Function
No
Symbol
Function
1
INa
Ach Input
16
Vcc
Power Supply Pin
2
BBE1a
Ach BBE Filter1
17
AUX1
Auxiliary Output1
3
BBE2a
Ach BBE Filter2
18
AUX0
Auxiliary Output0
4
BBEOUTa
Ach BBE Output
19
CTL
DAC Output for Tone Low Frequency
5
TONEINa
Ach Tone Input
20
CTH
DAC Output for Tone High Frequency
6
TONE-Ha
Ach Treble Filter
21
VREF
Reference Voltage
7
TONE-La
Ach Bass Filter
22
PS
Surround Phase Shift Filter
8
OUTa
Ach Output(0dB)
23
OUTb
Bch Output(0dB)
9
AGC1
AGC1
24
TONE-Lb
Bch Bass Filter
10
AGC2
AGC2
25
TONE-Hb
Bch Treble Filter
11
CVB
DAC Output for Bch Volume & Balance
26
TONEINb
Bch Tone Input
12
CVA
DAC Output for Ach Volume & Balance
27
BBEOUTb
Bch BBE Output
13
SDA
SDA Data Input (I2C BUS)
28
BBE2b
Bch BBE Filter2
14
SCL
SCL Data Input (I2C BUS)
29
BBE1b
Bch BBE Filter1
15
GND
GND
30
INb
Bch Input
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
30
29
28
27
26
INa
BBE1a
BBE2a
TONE-Ha
TONE-La
BBEOUTa
TONEINa
OUTa
AGC1
AGC2
CVB
CVA
SDA
SCL
GND
INb
BBE1b
BBE2b
TONE-Hb
TONE-Lb
TONEINb
OUTb
PS
VREF
CTH
25
24
23
22
21
CTL
AUX0
AUX1
Vcc
20
19
18
17
16
BBEOUTb
NJW1132A
- 3 -
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ABSOLUTE MAXIMUM RATING (Ta=25C)
PARAMETER
SYMBOL
RATING
UNIT
Supply Voltage
V
+
14
V
Power Dissipation
P
D
700
mW
Operating Temperature Range
Topr
-20 to +75
C
Storage Temperature Range
Tstg
-40 to +125
C
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ELECTRICAL CHARACTERISTICS (Ta=25C, V+=9V, Rg=600
, R
L
=47k
, Vin=100mVrms/1kHz)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Operating Voltage
V+
8.0
9.0
13.0
V
Supply Current
I
CC
No Signal
-
25
35
mA
Reference Voltage
V
REF
No Signal
4.0
4.5
5.0
V
Maximum Input Voltage
V
IM
VOL=C3H(-20dB),THD=1%
2.3
2.5
-
Vrms
Maximum Output Voltage
V
OM1
OUTPUT
VOL=FFH,THD=1%
-
2.5
-
Vrms
Maximum Gain
G
VMAX
VOL=FFH
-2.0
0.0
2.0
dB
Minimum Gain
G
VMIN
VOL=00H
-
-
-70
dB
Channel Balance
G
CB
VOL=FFH
-1.5
0.0
1.5
dB
Balance Boost A
BA
BST
CHS="0",BAL="11111"
-2.0
0.0
2.0
dB
Balance Cut A
BA
CUT
CHS="1",BAL="11111"
Vin = 1Vrms
-
-
-70
dB
Balance Boost B
BB
BST
CHS="1",BAL="11111"
-2.0
0.0
2.0
dB
Balance Cut B
BB
CUT
CHS="0",BAL="11111"
Vin = 1Vrms
-
-
-70
dB
Total Harmonic Distortion
THD
Vo=0.5Vrms
BW=400Hz to 30kHz
-
-
0.5
%
Maximum Gain
G
VMAX
VOL=FFH
-2.0
0.0
2.0
dB
Minimum Gain
G
VMIN
VOL=00H
-
-
-70
dB
Channel Separation
CS
Vin=2Vrms
-
-
-70
dB
Output Noise 1
V
NO1
VOL=FFH
BW=400Hz to 30kHz
-
-
-80
(100)
-70
(316)
dBV
(
Vrms)
Output Noise 2
V
NO2
VOL=00H
BW=400Hz to 30kHz
-
-
-90
(31.6)
-82
(79.4)
dBV
(
Vrms)
Logic Output : High
4.5
-
5.0
AUX Output Voltage
V
AUX
Logic Output : Low
0
-
0.3
V
BW : Band Width
NJW1132A
- 4 -
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TONE CONTROL(Ta=25C, V+=9V, Rg=600
, R
L
=47k
, Vin=100mVrms/1kHz)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
High Frequency Boost
HF
BST
BCT="1",TREB="1111",
f=10kHz
12.5
15.0
17.5
dB
High Frequency Flat
HF
FLT
TRBE="0000",f=10kHz
-2.0
0.0
2.0
dB
High Frequency Cut
HF
CUT
BCT="0",TRBE="1111",
f=10kHz
-12.5
-15.0
-17.5
dB
Low Frequency Boost
LF
BST
BCB="1",BASS="1111",
f=100Hz
12.5
15.0
17.5
dB
Low Frequency Flat
LF
FLT
BASS="0000",f=100Hz
-2.0
0.0
2.0
dB
Low Frequency Cut
LF
CUT
BCB="0",BASS="1111",
f=100Hz
-12.5
-15.0
-17.5
dB
High Frequency Cut
DC Offset1
HF
DC1
BCT="0",TREB="1111"
"0000"
-1.0
0.0
1.0
V
High Frequency Boost
DC Offset2
HF
DC2
BCT="1",TREB="1111"
"0000"
-1.0
0.0
1.0
V
Low Frequency Cut
DC Offset1
LF
DC1
BCB="0",
BASS="1111"
"0000"
-1.0
0.0
1.0
V
Low Frequency Boost
DC Offset2
LF
DC2
BCB="1",
BASS="1111"
"0000"
-1.0
0.0
1.0
V
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SUB-TONE CONTROL(Ta=25C, V+=9V, Rg=600
, R
L
=47k
, Vin=100mVrms)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
High Frequency Boost
SHF
BST
BCST="0",
SUB-TREB="11",f=10kHz
2.0
3.0
4.0
dB
High Frequency Flat
SHF
FLT
SUB-TREB="00",f=10kHz
-2.0
0.0
2.0
dB
High Frequency Cut
SHF
CUT
BCST="0",
SUB-TREB="11",f=10kHz
-4.0
-3.0
-2.0
dB
Low Frequency Boost
SLF
BST
BCSB="1",
SUB-BASS="11",f=100Hz
2.0
3.0
4.0
dB
Low Frequency Flat
SLF
FLT
SUB-BASS="00",f=100Hz
-2.0
0.0
2.0
dB
Low Frequency Cut
SLF
CUT
BCSB="1",
SUB-BASS="11",f=100Hz
-4.0
-3.0
-2.0
dB
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AGC CONTROL: AGC=1H (AGC-ON) (Ta=25C, V+=9V, Rg=600
, R
L
=47k
, f=1kHz)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
AGC BOOST
AGC
BST
Vin=50mVrms
1.5
3.5
5.5
dB
AGC FLAT
AGC
FLT
Vin=150mVrms
-2.5
0.0
2.5
dB
AGC CUT
AGC
CUT
Vin=2Vrms
-14
-10
-6.0
dB
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SURROUND CONTROL (Ta=25C,V+=9V,Rg=600
,R
L
=47k
,Vin=100mVrms/1kHz)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
SURROUND MIX 1
SR
MIX1
Ain
Bout
-2.0
0.0
2.0
dB
SURROUND MIX 2
SR
MIX2
Bin
Aout
-2.0
0.0
2.0
dB
SURROUND DEF
SR
DEF
Ain-Bin(-180deg)
8.0
10.0
12.0
dB
DC Offset
SR
DC
SUR="0"
"1"
-1.0
0.0
1.0
V
NJW1132A
- 5 -
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BBE =1H (BBE-ON) (Ta=25C,V+=9V,Rg=600
,R
L
=47k
,Vin=100mVrms)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
BBE low Frequency
Boost Range
BBE
LOW
BBE-Low="1111", f = 50Hz
-
15.0
-
dB
BBE High Frequency
Boost Range
BBE
HIGH
BBE-High="1111", f = 10KHz
-
15.0
-
dB
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APPLICATION CIRCUIT
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
30
29
28
27
26
INa
BBE1a
BBE2a
TONE-Ha
TONE-La
OUTa
AGC1
AGC2
16
17
18
19
20
CVB
CVA
SDA
SCL
GND
INb
BBE1b
BBE2b
TONE-Hb
TONE-Lb
OUTb
PS
VREF
CTH
25
24
23
22
21
CTL
AUX0
AUX1
Vcc
4.7
3.3n
33n
4.7n
100n
4.7
4.7
4.7
1
100n
4.7
4.7
4.7
3.3n
33n
4.7n
100n
4.7
4.7
4.7
100n
4.7
4.7
4.7
22
BBEOUTa
TONEINa
TONEINb
BBEOUTb
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